[annalex]

From that angle I should add that deliberate childlessness of a married couple is also sinful, unless a valid reason for the childlessness exists. That is true even if the couple avoids pregnancy through legitimate methods and not using contraception or self-mutilation.

The valid reasons are severe economic hardship (never an issue in America), considerable risk to the health of the mother or high probability of birth defects.

Theoretical fears of “overpopulation” — whatever that means — are not a valid reason for a married couple to avoid pregnancies.

The vocation of single life, religious or not, is available for those who do not feel they are fit for parenthood.

[BipolarBob]

Theoretical fears of “overpopulation” — whatever that means — are not a valid reason for a married couple to avoid pregnancies.

Your lack of reasoning is sinful also.

[IIntense]

The valid reasons are severe economic hardship (never an issue in America), considerable risk to the health of the mother or high probably of birth defects.

No American suffers severe economic hardship? Pardon my honest reply but that's ridiculous!

Also, who bestowed on you the authority to list the only reasons for childlessness?

We all witness married people who are unfit parents. IMHO, they should remain childless.